package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.*;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;
    @Value("${sky.shop.address}")
    private String shopAddress;
    @Value("${sky.baidu.ak}")
    private String ak;
    @Autowired
    private WebSocketServer webSocketServer;


    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */

    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //处理各种异常情况，(地址簿为空，购物车为空)
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook==null){
            //抛出业务异常
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL );
        }

        checkOutOfRange(addressBook.getCityName()+addressBook.getDistrictName()+addressBook.getDetail());

        //查询当前用户的购物车信息
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart=new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if (list==null || list.size()==0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //向订单中插入数据
        Orders orders=new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(userId);
        orderMapper.insert(orders);

        List<OrderDetail> orderDetailList=new ArrayList<>();
        //向订单明细中插入n条数据
        for (ShoppingCart cart : list) {
            OrderDetail orderDetail=new OrderDetail(); //订单明细
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insert(orderDetailList);
        //清空购物车
        shoppingCartMapper.deleteById(userId);
        //封装VO对象
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderTime(orders.getOrderTime())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .build();
        return orderSubmitVO;
    }
    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);
/*
        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );*/
        JSONObject jsonObject=new JSONObject();

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

        //通过websocket向客户端推送消息
        Map map=new HashMap();
        map.put("type",1); //1表示来单提醒，2表示客户催单
        map.put("orderId",ordersDB.getId());
        map.put("content","订单号:"+outTradeNo);

        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }


    /**
     * 查询历史订单
     * @param page
     * @param pageSize
     * @param status
     * @return
     */
  @Override
    public PageResult historyOrders(int page, int pageSize, Integer status) {
        PageHelper.startPage(page,pageSize);
        //先根据页码和每页记录数查询订单
        OrdersPageQueryDTO ordersPageQueryDTO=new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);
        Page<Orders> page1=orderMapper.pageQuery(ordersPageQueryDTO);
        List<OrderVO> list=new ArrayList<>();
        if (page1!=null &&page1.getTotal()>0){
            for (Orders orders : page1) {
                Long ordersId = orders.getId();
                List<OrderDetail> OrderDetails = orderDetailMapper.getByOrderId(ordersId);
                OrderVO orderVO=new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                orderVO.setOrderDetailList(OrderDetails);
                list.add(orderVO);
            }
        }
        return new PageResult(page1.getTotal(),list);
    }
   /*    @Override
        public PageResult historyOrders(OrdersPageQueryDTO ordersPageQueryDTO) {
            PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
            Long userId=BaseContext.getCurrentId();
            Page<Orders> page=orderMapper.getByUserId(userId);
            List<OrderVO> orderVOList=new ArrayList<>();
            if (page!=null&&page.getTotal()>0){
                for (Orders orders : page) {
                    Long ordersId = orders.getId();
                    List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(ordersId);
                    OrderVO orderVO=new OrderVO();
                    BeanUtils.copyProperties(orders,orderVO);
                    orderVO.setOrderDetailList(orderDetails);
                    orderVOList.add(orderVO);
                }
            }
            return new PageResult(page.getTotal(), orderVOList);
        }*/
    /**
     * 查询订单详情
     * @param id
     * @return
     */
    @Override
    public OrderVO orderDetail(Long id) {
        Orders orders=orderMapper.getByOrderId(id);
        List<OrderDetail> orderDetailList=orderDetailMapper.getByOrderId(orders.getId());
        OrderVO orderVO=new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        orderVO.setOrderDetailList(orderDetailList);
        return orderVO;
    }

    /**
     * 用户取消订单
     * @param id
     */
    @Override
    public void cancelOrder(Long id) throws Exception {
        Orders orders = orderMapper.getByOrderId(id);
        //查询订单是否存在
        if (orders==null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (orders.getStatus() >2){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders1=new Orders();
        orders1.setId(orders.getId());
        //订单处于待接单状态下取消，需要进行退款
        if (orders.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            //调用微信支付退款接口
            weChatPayUtil.refund(
                    orders.getNumber(),
                    orders.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            //支付状态修改为退款
                    orders1.setPayStatus(Orders.REFUND);
        }

        //更新订单数据
        orders1.setStatus(Orders.CANCELLED);
        orders1.setCancelReason("用户取消");
        orders1.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders1);
    }

    /**
     * 再来一单
     * @param id
     */
    @Override
    public void repetitionOrder(Long id) {
        //查询当前用户id
        Long userId = BaseContext.getCurrentId();

        //根据订单id查询当前订单详情
        List<OrderDetail> orderDetail = orderDetailMapper.getByOrderId(id);
        //将订单详情对象转换为购物车对象
        List<ShoppingCart> shoppingCartList=orderDetail.stream().map(x->{
            ShoppingCart shoppingCart=new ShoppingCart();
            //将原订单详情里面的菜品信息重新复制到购物车对象中
            BeanUtils.copyProperties(x,shoppingCart,"id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            return shoppingCart;
        }).collect(Collectors.toList());
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    /**
     * 订单搜索
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        Page<Orders> page=orderMapper.pageQuery(ordersPageQueryDTO);
        List<OrderVO> orderVOList= getOrderVOList(page);
        return new PageResult(page.getTotal(), orderVOList);
    }

    private List<OrderVO> getOrderVOList(Page<Orders> page) {
        //需要返回订单菜品信息，自定义OrderVO响应结果
        List<OrderVO> orderVOList=new ArrayList<>();
        List<Orders> ordersList=page.getResult();
        if (!CollectionUtils.isEmpty(ordersList)){
            for (Orders orders : ordersList) {
                //将公共字段复制到OrderVO中
                OrderVO orderVO=new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                String orderDishes= getOrderDishesStr(orders);
                //将订单菜品信息封装到orderVO中，并添加到orderVOList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }
        return orderVOList;

    }

    private String getOrderDishesStr(Orders orders) {
        //查询订单菜品详细信息，订单中的菜品和数量
        List<OrderDetail> orderDetailList=orderDetailMapper.getByOrderId(orders.getId());

        //将每一条订单菜品信息拼接为字符串
        List<String> orderDishList=orderDetailList.stream().map(x->{
            String orderDish=x.getName()+"*"+x.getNumber()+";";
            return orderDish;
        }).collect(Collectors.toList());
        return String.join("",orderDishList);

    }

    /**
     * 各个状态的订单数量统计
     * @return
     */
    @Override
    public OrderStatisticsVO orderStatistics() {
        Integer toBeConfirmed=orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed=orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress=orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);
        OrderStatisticsVO orderStatisticsVO=new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
    }

    /**
     * 接单
     * @param ordersConfirmDTO
     */
    @Override
    public void confirmOrder(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders=Orders.builder()
                        .id(ordersConfirmDTO.getId())
                        .status(Orders.CONFIRMED)
                        .build();
        orderMapper.update(orders);
    }

    /**
     * 拒单
     * @param ordersRejectionDTO
     */
    @Override
    public void rejectionOrder(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        Orders orders = orderMapper.getByOrderId(ordersRejectionDTO.getId());
        if (orders==null ||!orders.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //支付状态
        Integer payStatus=orders.getPayStatus();
        if (payStatus==Orders.PAID){
            //用户已经支付，需要退款
            String refund= weChatPayUtil.refund(
                    orders.getNumber(),
                    orders.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款:{}",refund);

        }

        //拒单需要退款，根据订单id更新订单状态，拒单原因，取消时间
        Orders orders1=new Orders();
        orders1.setId(orders.getId());
        orders1.setStatus(Orders.CANCELLED);
        orders1.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orderMapper.update(orders1);
    }

    /**
     * 取消订单
     * @param ordersCancelDTO
     */
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
        //根据订单id查询订单
        Orders orders = orderMapper.getByOrderId(ordersCancelDTO.getId());
        //支付状态
        Integer payStatus = orders.getPayStatus();

        //将付款退回
        if (payStatus == 1) {
            String refund = weChatPayUtil.refund(
                    orders.getNumber(), //商家订单号
                    orders.getNumber(), //用户退款号
                    new BigDecimal(0.01), // 订单金额
                    new BigDecimal(0.01)); //退款金额

        }
        //设置取消原因
        Orders orders1=new Orders();
        orders1.setId(ordersCancelDTO.getId());
        orders1.setCancelReason(ordersCancelDTO.getCancelReason());
        //将订单状态设置为取消
        orders1.setStatus(Orders.CANCELLED);
        orders1.setCancelTime(LocalDateTime.now());
        //更新订单
        orderMapper.update(orders1);

    }


    /**
     * 派送订单
     * @param id
     */
    @Override
    public void deliveryOrder(Long id) {
        Orders ordersDB=orderMapper.getByOrderId(id);
        if (ordersDB==null||!ordersDB.getStatus().equals(Orders.CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);
        orderMapper.update(orders);
    }

    /**
     * 完成订单
     * @param id
     */
    @Override
    public void completeOrder(Long id) {
        Orders ordersDB=orderMapper.getByOrderId(id);
        if (ordersDB==null||!ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());
        orderMapper.update(orders);
    }


    /**
     * 客户催单
     * @param id
     */
    @Override
    public void reminder(Long id) {
        Orders ordersDB=orderMapper.getByOrderId(id);
        if (ordersDB==null){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Map map=new HashMap();
        map.put("type",2); //1.来单提醒，2.客户退单
        map.put("orderId",id);
        map.put("content","订单号:"+ordersDB.getNumber());
        //通过websocketServer向浏览器推送消息
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }


}